Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8f67220637056fb…

MALICIOUS

PDF

46.9 KB Created: 2020-08-30 21:37:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0d4989195717620d1cb73526f64dabb SHA-1: 1f64f77b70989194a6efe07c6ef414fed1c1fe45 SHA-256: c8f67220637056fb35fe9c7a80889bca9ec44b12e74028d535e2a9d60fd5dc8e
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'ibrahim tatlises mp3' and the wkhtmltopdf application, suggesting a lure. The presence of multiple external PDF links also indicates a link farm strategy. The primary attack pattern involves redirecting the user to malicious infrastructure via these embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/wix?keyword=ibrahim+tatlises+mp3
    • https://static.usrfiles.com/ugd/9b5f63_0cb7b48c8027421ea63f4193ef9f387b.pdf
    • https://static.usrfiles.com/ugd/e2c6c1_5887d83fc6624ce88bb0bc8b87f0b44c.pdf
    • https://static.usrfiles.com/ugd/b8c837_4dd701a1a1a34f57acba642faf80095b.pdf
    • https://static.usrfiles.com/ugd/93c935_9434fba34873425cb4feaa4d1e5cc48f.pdf
    • https://static.usrfiles.com/ugd/fe83c3_962dcecb6fa647c5b0b82d403afb3bfa.pdf
    • https://static.usrfiles.com/ugd/b8c837_b291d8e5287540a7a20338fd5a39b0c9.pdf
    • https://static.usrfiles.com/ugd/0fdb6d_039ffd6861a54aa79a91efec3ecd40ba.pdf
    • https://static.usrfiles.com/ugd/93c935_5f92b560a0154118929eed2d506e4107.pdf
    • https://static.usrfiles.com/ugd/b8c837_563c20ddf4b743918a3473b6aaa67e21.pdf
    • https://static.usrfiles.com/ugd/4b68be_c1afc19fd703461dabb3188fcd6149f6.pdf
    • https://static.usrfiles.com/ugd/b8c837_28fac90fa32549fab076ee66f0d9fae5.pdf
    • https://static.usrfiles.com/ugd/b8c837_bad46709eed94c46926a22702f232f21.pdf
    • https://static.usrfiles.com/ugd/b8c837_2221e226f0e647fa94630d322fa78eca.pdf
    • https://static.usrfiles.com/ugd/3e87bf_c6499fcd29404cc9b45808dcf70dc49c.pdf
    • https://static.usrfiles.com/ugd/b8c837_fc4d593d89d3458f8c6ce36337143781.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c46.bin
305af64d0bd25853b064c95bcf1f13d9da2620fdde6b4db96837ac36734bcb05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C46 5300 bytes
font_01_sfnt_off00007e21.bin
90d915cdf55ddd8eafdac47a0056d541a1323a00d558b4c0dfefe99d3c71a8e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E21 16212 bytes

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